<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>textarea 文本域</title>
</head>
<body>
    <form>
        留言板：
        <!--  仅了解即可。cols一行能写多少个字，rows显示几行 -->
        <textarea cols="50" rows="5">你想吃什么呀？</textarea>
    </form>
</body>
</html>